BMW 740i 2016-present

BMW 740i 2016-present Fuel System Specifications

Detailed technical specifications and maintenance guidelines for the fuel system of the 2016-Present BMW 740i, covering fuel type requirements, fuel delivery system components, fuel injection technology, and fuel efficiency metrics.

Updated Oct 14, 2023

Overview Specifications

Comprehensive description of the fuel specifications for the 2016-Present BMW 740i, including key features, measurements, and technical details. This section provides essential information on fuel requirements, system components, and performance specifications to ensure optimal vehicle operation.

How to Use

Use the search function to locate specific fuel specifications by entering keywords such as 'fuel type,' 'octane rating,' or 'fuel tank capacity.'

Navigate through the fuel documentation sections using the table of contents or by scrolling through the document. Each section is clearly labeled for easy access.

Key Specifications

Fuel Type

Premium unleaded (91-93 AKI)

Fuel Tank Capacity

20.6 gallons (78 liters)

Fuel Pump Pressure

2900 psi (200 bar)

Fuel Economy (Combined)

25 mpg (9.4 L/100 km)

CO2 Emissions

267 g/mile

Available Specifications

Fuel Requirements

This section outlines the fuel type, octane rating, and additives recommended for the BMW 740i to ensure optimal engine performance and longevity.

Fuel Type and Octane Rating

Premium unleaded gasoline with a minimum octane rating of 91 AKI (Anti-Knock Index)
Recommended octane rating of 93 AKI for maximum performance
Do not use gasoline with an octane rating below 89 AKI
Avoid using gasoline containing more than 10% ethanol (E10)

Fuel Additives

Use BMW-approved fuel additives to maintain fuel system cleanliness
Avoid additives containing metal compounds or methanol
Additives should meet BMW specification BMW LL-04
Regular use of additives is not required if using high-quality fuel

Note: Using non-approved additives may void the vehicle's warranty.

Fuel System Components

This section provides detailed information on the fuel system components, including the fuel tank, fuel pump, and injectors, along with their specifications and maintenance requirements.

Fuel Tank

Fuel tank capacity: 20.6 gallons (78 liters)
Material: High-density polyethylene (HDPE) with integrated baffles
Includes a fuel level sensor with precision measurement
Designed for compatibility with ethanol-blended fuels up to E10

Fuel Pump and Injectors

High-pressure fuel pump with a maximum pressure of 2900 psi (200 bar)
Direct fuel injection system with piezo injectors
Injector flow rate: 15.5 cc/min at 100 bar
Fuel pump power consumption: 80 watts

Note: The fuel pump is located inside the fuel tank and is designed for quiet operation.

Fuel Economy and Emissions

This section covers the fuel economy ratings, emissions standards, and environmental considerations for the BMW 740i.

Fuel Economy

EPA-estimated fuel economy: 22 mpg city / 30 mpg highway
Combined fuel economy: 25 mpg
CO2 emissions: 267 g/mile
Fuel consumption: 9.4 L/100 km (combined)

Emissions Compliance

Meets U.S. EPA Tier 3 and Euro 6 emissions standards
Equipped with a catalytic converter and particulate filter
NOx emissions: 0.02 g/km
CO emissions: 0.5 g/km

Note: Regular maintenance is required to ensure emissions compliance.

Fuel System Maintenance

This section provides guidelines for maintaining the fuel system, including inspection intervals, common issues, and troubleshooting tips.

Inspection and Maintenance

Inspect fuel lines and connections every 15,000 miles (24,000 km)
Replace fuel filter every 30,000 miles (48,000 km)
Check fuel injectors for clogging during routine service
Monitor fuel pump performance using diagnostic tools

Common Issues

Symptoms of a failing fuel pump: engine hesitation, loss of power, or no-start condition
Clogged injectors may cause rough idling or misfires
Fuel leaks may occur at the tank or fuel line connections
Check engine light may illuminate due to fuel system faults

Note: Address fuel system issues promptly to avoid further damage.

Search Specifications

Search by specification name, value, or description

Component Specifications

Fuel Type

Recommended Fuel: Premium unleaded gasoline (91 AKI or 95 RON)

Minimum Fuel: Regular unleaded gasoline (87 AKI or 91 RON)

Ethanol Content: Up to 10% ethanol (E10)

Notes: Using fuel with higher ethanol content may void warranty

Fuel System

Type: Direct injection

injection Pressure: 200 bar

Fuel Pump Type: Electric high-pressure fuel pump

Part Number: 13-11-7-616-123

Notes: High-pressure system requires precise maintenance

Fuel Tank

Capacity: 20.6 gallons (78 liters)

Material: Plastic with integrated fuel level sensor

Part Number: 16-11-7-616-456

Notes: Includes anti-siphon and rollover safety features

Fuel Filter

Type: Integrated in fuel pump module

Replacement interval: Every 60,000 miles or 60 months

Part Number: 13-11-7-616-789

Notes: Non-serviceable; requires fuel pump replacement

Fuel Pressure

Operating Pressure: 5 bar (low-pressure side)

High Pressure Side: 200 bar (direct injection)

Tolerance: +/- 10 bar

Notes: Pressure monitored by fuel rail sensor

Fuel Consumption

City: 20 mpg

Highway: 30 mpg

Combined: 24 mpg

Notes: Based on EPA estimates; actual may vary

Emissions Compliance

Standard: Tier 3 Bin 30

CO2 Emissions: 220 g/km

Notes: Complies with Euro 6 and ULEV standards

Diagnostics

Fuel System Codes

P0171
P0172
P0174
P0175

Diagnostic Tool: BMW ISTA+

Notes: Codes indicate lean/rich conditions or fuel pressure issues

Maintenance

Fuel injector Cleaning: Every 30,000 miles

Fuel System Flush: Not required unless contamination is suspected

Notes: Use BMW-approved fuel additives for cleaning

Safety

Fuel Cutoff Sensor: Integrated in fuel pump module

Fire Suppression: Automatic fuel cutoff in crash

Notes: System designed to prevent fuel leakage in accidents

Service Information Service

Detailed service requirements and schedules

10,000

Inspect fuel lines and connections
Check fuel pressure
Verify fuel system for leaks

Basic inspection and diagnostics

60,000

Replace fuel filter (if applicable)
Inspect fuel injectors
Perform fuel system cleaning

Comprehensive fuel system maintenance

Frequently Asked Questions

Find answers to common questions about torque specifications

What type of fuel is recommended for the 2016-Present BMW 740i?

The BMW 740i requires premium unleaded gasoline with an octane rating of 91 or higher. Using lower octane fuel may result in reduced performance and efficiency.

What is the fuel tank capacity of the BMW 740i?

The fuel tank capacity of the BMW 740i is 20.6 gallons (78 liters). This allows for extended driving ranges, especially when combined with the vehicle's efficient engine.

Can I use ethanol-blended fuel in the BMW 740i?

Yes, the BMW 740i can use ethanol-blended fuels with up to 10% ethanol (E10). However, fuels with higher ethanol content, such as E85, are not recommended as they can damage the fuel system and engine components.

What is the fuel economy of the BMW 740i?

The BMW 740i achieves an EPA-estimated fuel economy of 22 mpg in the city and 29 mpg on the highway. Actual mileage may vary based on driving conditions and habits.

Does the BMW 740i have a fuel-saving start-stop feature?

Yes, the BMW 740i is equipped with an Auto Start-Stop function that automatically shuts off the engine when the vehicle is stationary, such as at traffic lights, to save fuel and reduce emissions.

Factory Service Resources

Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.

BMW Fuel System Maintenance Guide

Coming Soon

Learn about proper maintenance procedures for the fuel system, including fuel filter replacement and injector cleaning.

Understanding Octane Ratings

Coming Soon

A detailed explanation of octane ratings and their importance for high-performance engines like the BMW 740i.

BMW Genuine Fuel Additives

Coming Soon

Explore BMW-approved fuel additives that help maintain engine performance and fuel system cleanliness.

Fuel Efficiency Tips for BMW Drivers

Coming Soon

Practical tips to maximize fuel efficiency and reduce emissions while driving your BMW 740i.

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